netdev - Re: [PATCH bpf-next v2 0/4] Use correct destructor kfunc types

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Message-ID: <20250728182134.GB899009@google.com>
Date: Mon, 28 Jul 2025 18:21:34 +0000
From: Sami Tolvanen <samitolvanen@...gle.com>
To: Yonghong Song <yonghong.song@...ux.dev>
Cc: bpf@...r.kernel.org, Vadim Fedorenko <vadim.fedorenko@...ux.dev>,
	Alexei Starovoitov <ast@...nel.org>,
	Daniel Borkmann <daniel@...earbox.net>,
	Andrii Nakryiko <andrii@...nel.org>,
	Martin KaFai Lau <martin.lau@...ux.dev>,
	Eduard Zingerman <eddyz87@...il.com>, Song Liu <song@...nel.org>,
	John Fastabend <john.fastabend@...il.com>,
	KP Singh <kpsingh@...nel.org>, Stanislav Fomichev <sdf@...ichev.me>,
	Hao Luo <haoluo@...gle.com>, Jiri Olsa <jolsa@...nel.org>,
	Jamal Hadi Salim <jhs@...atatu.com>,
	Cong Wang <xiyou.wangcong@...il.com>, Jiri Pirko <jiri@...nulli.us>,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH bpf-next v2 0/4] Use correct destructor kfunc types

On Fri, Jul 25, 2025 at 04:42:29PM -0700, Yonghong Song wrote:
> 
> With this patch set and no CONFIG_CFI_CLANG in .config,
> the bpf selftests work okay. In bpf ci, CONFIG_CFI_CLANG
> is not enabled.
> 
> But if enabling CONFIG_CFI_CLANG, this patch set fixed
> ./test_progs run issue, but there are some test failures
> like
> 
> ===
> test_get_linfo:FAIL:check jited_linfo[1]:ffffffffa000d581 - ffffffffa000d558 > 39
> processed 4 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
> #32/186  btf/line_info (No subprog):FAIL
> 
> test_get_linfo:FAIL:check jited_linfo[1]:ffffffffa000dee5 - ffffffffa000debc > 39
> processed 4 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
> #32/189  btf/line_info (No subprog. zero tailing line_info:FAIL
> 
> ...
> 
> test_get_linfo:FAIL:check jited_linfo[1]:ffffffffa000e069 - ffffffffa000e040 > 38
> processed 9 insns (limit 1000000) max_states_per_insn 0 total_states 1 peak_states 1 mark_read 0
> #32/202  btf/line_info (dead subprog + dead start w/ move):FAIL
> #32      btf:FAIL
> ===
> 
> The failure probably not related to this patch, but rather related
> to CONFIG_CFI_CLANG itself. I will debug this separately.

Agreed, that looks unrelated to this series.

Sami